JPH09155419A - Device for changing roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll changing device with which the working time for changing rolls is shortened by making positioning of rolls and roll chocks easy. SOLUTION: The roll changing device is provided with a drive-side chock moving device 10 which has a screw-down motor which is engaged with a roll screw down device of the drive-side stand, with which the screw down device is driven and the drive-side stand is supported and moved in the axial direction of the roll and an operation-side chock moving device 20 for supporting an operation-side stand and moving it in the direction orthogonal to the axial direction of the roll. Further, when the device is taken as a constitution composed of a roll moving device 30, for supporting the roll and moving it in the axial direction of the roll, which has a roll supporting table which is freely ascendable and descendable, a tilting mechanism 36 for tilting the roll supporting table and an aligning mechanism 37 for moving the roll supporting table horizontally in the direction orthogonal to the axial direction of the roll, the roll is easily made to coincide with the chock of the drive-side stand at the time of assembly, so the roll is exchanged in a short time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a roll exchanging device capable of reducing the amount of crane work when performing roll exchanging work of a roll stand, and more particularly, to easily position a chock and a roll of the roll stand. The present invention belongs to the technical field of a roll exchanging device that can be adjusted to suit.

[0002]

2. Description of the Related Art As is well known, the roll of a roll stand is replaced with a repaired or new roll when the roll is worn in order to maintain the quality of rolled products. Conventionally, the roll replacement work of the roll stand has generally been performed as follows. (1) Use a crane to turn the roll stand sideways so that the rolls are vertical, and then pull out the drive side chock with the crane. (2) Lift the upper and lower rolls one by one with a crane and pull out the upper and lower rolls from the work side chock located under the roll stand. (3) Suspend new upper and lower rolls one by one with a crane, and fit their ends into the work chocks on the lower side. (4) Suspend the driving chock with a crane and fit it onto the ends of the upper and lower rolls. Then, the roll stand is raised and fixed so that the roll becomes horizontal. As mentioned above, most of the upper and lower roll replacement work is done by crane work. Therefore, the roll replacement work is not only dangerous, but also takes a long time. By the way, a roll exchanging device capable of solving such a problem is disclosed in U.S. Pat. S. Patent No. 4
552007.

The outline will be described below with reference to FIGS. 7 to 11 using the same reference numerals used in the specification, and the roll carriage 10 of the roll exchanging device is shown in FIG.
As shown in FIGS. 8 and 10, the wheels 18 and 18 are configured to reciprocate on the base 11, and the U-shaped support for supporting the rolls 16 and 16 is provided on the carriage 12 at two positions before and after the traveling direction. Roll supporting portions 20, 20 are provided. Further, cam-shaped supports 21 are provided on the side surfaces of the walls 19 on both sides of the roll supporting portions 20, 20, and the upper and lower supports 2 are provided.
Support bars 22, 22 are provided which are guided by the guides 1, 21 and are inserted and pulled out. These support bars 22 and 22 support the rolls 16 and 16 in the inserted state, support the upper and lower end surfaces of the body of the lower roll 16, and the lower roll 16 of the upper roll 16. By supporting the end face, it serves to fix the axial movement.

Each of these support bars 22 has
An adjusting device 23 for rotating the cam by rotating a screw as necessary to vertically move one end side of the support bar 22 is provided. And FIG. 9 and FIG.
As shown in and, the rolls 16 and 16 are reciprocally moved in the axial direction on the base 11 and on both sides of the moving range of the roll carriage 10, and the rolls 16 and 16 move away from the rolls 16 and 16. A housing 14 in which a chock (not shown) is incorporated from the ends of the rolls 16, 16.
Chock carriages 13 and 13 are provided which remove 15 and, on the contrary, move them in the approaching direction so that the ends of the rolls 16 and 16 fit into the chocks of the housings 14 and 15.

Therefore, as shown in FIG. 7, first, new rolls 16 and 16 are set on the right roll support portion 20,
Next, as shown in FIG. 8, the roll stand 17 is set so that the rolls 16 to be replaced are supported by the left roll support portion 20. Then, as shown in FIG. 9, when the chock carriages 13, 13 are moved in a direction away from the rolls 16, 16, the housings 14, 15 are separated from the end portions of the rolls 16, 16, and the rolls 16, 1
A chock (not shown) is removed from the end of 6. After that, as shown in FIG. 10, the chock carriages 13 and 13 supporting the housings 14 and 15 at distant positions.
And moving the roll carriage 10 to a position where the new rolls 16 and 16 coincide with each other, and as shown in FIG.
When is moved, the housings 14 and 15 come close to each other, and a chock (not shown) is fitted onto the ends of the rolls 16 and 16. After that, the roll stand 17 is hung by a crane and installed at a predetermined installation location, whereby a series of roll replacement work is completed.

[0006]

The roll exchanging device according to the above-mentioned conventional example is extremely useful because the crane is used only when the roll stand and the roll are moved, and the crane work is small. However, this has problems to be solved as described below. That is, the position of the roll can be adjusted in the vertical direction by the adjusting device, but the position in the horizontal direction cannot be adjusted when the roll carriage is stopped.
It takes a long time to fit the chock onto the end of the roll.

In a roll stand in which the left and right chocks are connected by inter-chock stays, it is impossible to support the rolls by the support bar. Therefore, in the case of such a roll stand, the inter-chock stays are not supported. Detachment (especially, installation requires a long time) is required, and roll replacement requires a long time. That is, it is desirable that the roll exchanging device does not require the stay between the chocks to be attached or detached, or has a function of exchanging the rolls only by detaching the one side.

Therefore, according to the present invention, even in the roll stand in which the left and right chocks are connected by the inter-chock stays, the rolls can be easily exchanged by facilitating the alignment of the rolls and the chocks. The purpose is to provide a device.

[0009]

In order to solve the above problems, the means adopted by the roll exchanging device according to claim 1 of the present invention has an upper chock and a lower chock on the left and right,
A roll stand in which the ends of the upper roll and the lower roll are supported is set on the upper chock and the lower chock, and the roll pressing device provided on the drive side stand of the set roll stand is detachably engaged with the roll chocking device. A roll-down device for driving the roll-down device, and a drive-side chock moving device that supports the drive-side stand and is reciprocally operated in the axial direction of the roll; and a work-side stand for the roll stand. And a working side chock moving device that is reciprocally operated in a direction orthogonal to the axial direction of the roll, and a roll supporting device provided with a roll fixing device on the opposite side of the driving side chock moving device. A tilting mechanism that has a base and tilts the roll support base, and moves the supporting roll in a direction orthogonal to the axial direction of the roll. And a aligning mechanism for, supporting said roll, characterized in that the roll displacement device is reciprocating in the axial direction of the roll is provided.

The means adopted by the roll exchanging device according to claim 2 of the present invention is the roll exchanging device according to claim 1, wherein the roll supporting base of the roll moving device supports the upper roll. And a lower roll supporting portion for supporting the lower roll, which has a two-stage structure.

The means adopted by the roll exchanging device according to claim 3 of the present invention is the roll exchanging device according to claim 1 or 2, wherein an auxiliary roll for supporting a new roll is provided in addition to the roll moving device. A moving device is provided, and a position switching device that freely switches the positions of the roll moving device and the auxiliary roll moving device is provided.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A roll exchanging device according to a first embodiment of the present invention, which corresponds to claim 1 of the present invention, will be described below with reference to FIG. FIG. 3 is an enlarged view of part B of FIG. 2, and FIG. 4 (a) is a side view of the roll moving device.
This will be described with reference to FIG. 4B which is a view taken in the direction of arrow C of FIG.

Reference numeral 1 shown in FIGS. 1 and 2 designates a base, on which a drive side chock moving device 10 and a working side chock moving device 20 having a roll stand 2 set, which will be described later, are provided. It is arranged. The driving side chock moving device 10 supports the driving side stand 2d of the roll stand 2, and the rod of the trunnion-type horizontal cylinder 16 attached to the base 1 via a bracket expands and contracts to move the sliding plate 13 at the bottom. It is configured to be slidably moved in the axial direction of the upper and lower rolls 3 and 4 while being guided by a guide 1b provided on the base 1. Further, the working side chock moving device 20 supports the working side stand 2w of the roll stand 2, and the slide plate 23 at the bottom is provided on the base 1 by the expansion and contraction of the rod of the horizontal cylinder 24 attached to the base 1. It is configured to be slidably moved in the direction orthogonal to the axial direction of the upper and lower rolls 3 and 4 while being guided by the guide 1c.

Further, the driving side chock moving device 10
Is a pair of stand support members 11 that support both sides in a direction orthogonal to the roll supported by the drive side stand 2d, and stand on the bottom member that supports the bottom portion of the roll stand 2, and perform roll center adjustment on the upper portion. The pressure reducing motor support member 12 provided with the pressure reducing motor 14 is provided upright. In the vicinity of the reduction motor 14 above the reduction motor supporting member 12, the reduction motor 14 is moved in the axial direction of the roll to reduce the roll reduction provided on the drive side stand 2d supported by the stand support member 11. A reduction motor shift device 15 including a cylinder that is detachably engaged with the device is provided. That is, by driving the reduction motor shift device 15 to engage and drive the reduction motor 14 with the roll reduction device, a gap between upper and lower chocks (not shown) that respectively support the ends of the upper and lower rolls 3 and 4 is provided. Is adjusted so that the roll center-to-center adjustment is performed.

In the working-side chock moving device 20, a pair of stand supporting members 21 for supporting both sides of the working-side stand 2w in the direction orthogonal to the rolls are erected on the bottom member for supporting the bottom of the roll stand 2, and a pair of A horizontal support member 22 having a function of restricting the movement of the roll stand working side stand 2w in the axial direction of the roll is provided above the stand support member 21 on the side opposite to the roll.

Further, as shown in FIG. 2, a roll moving device 30 to be described later, which is reciprocally moved by a horizontal cylinder 38 and is separated from the driving side chock moving device 10, is provided on the opposite side of the driving side chock moving device 10. It is provided. This roll moving device 30 is shown in FIG.
As shown in (b), a cart 31 having wheels 31a rolling on the upper surfaces of a pair of flat rails 1a provided on the base 1 and guide wheels 31b rolling on the lower surface of the rails 1a is provided. ing. An elevating device 32 including a crossed link mechanism 32a, a base plate 32b, and a hydraulic cylinder (not shown) is mounted on the carriage 31. The hydraulic cylinder can be replaced with an electric cylinder or a feed screw mechanism. Also, the lifting device 32 can be of a jack type.

A bracket is provided on the drive side chock moving device 10 side on the base plate 32b of the lifting device 32, and a horizontal tilt pin 32c in a direction orthogonal to the moving direction of the carriage 31 is provided on the bracket. A roll support base 33, which will be described later, is mounted via the above. In other words, the feed screw mechanism tilts the roll support base 33 by taking in and out a wedge-shaped member (not shown), and the feed screw mechanism and the wedge-shaped member constitute the tilting mechanism 36. The roll support base 33 includes a roll clamp 34 that synchronously moves in the opposite direction and the opposite direction to clamp the body of the roll, and is screwed to a female screw threaded on the end face of the roll. A shaft end fixing mechanism 35 including a screw 35b and a bracket 35a supporting the screw 35b is provided. Further, in the anti-driving side chock moving device 10 on the base plate 32b, the roll support base 33 is moved in the moving direction of the carriage 31 by forward and reverse rotation of a nut screwed to a screw horizontally supported by the bracket. An aligning mechanism 37 for horizontally reciprocating is provided in a direction orthogonal to. The reference numeral 5 shown in FIG.
It is an inter-chock stay that is disengaged from the drive-side stand 2d.

Hereinafter, the case of exchanging rolls with the roll exchanging device having the above-mentioned structure will be described. (1) The drive-side chock moving device 10 and the working-side chock moving device 20 are moved forward most, and in this state, the roll stand 2 is suspended by the crane, and the drive-side chock moving device 10 and the working-side chock moving device 20 are suspended. Set on top. (2) Remove one side of the inter-chock stay 5 and retract the driving side chock moving device 10. At this time, the upper and lower rolls 3 and 4 are supported in a cantilever state on the drive side stand 2d supported by the drive side chock movement device 10, and the work side stand 2w is attached to the work side chock movement device 20. It is supported. (3) The work side chock moving device 20 is retracted. (4) Roll moving device 3 with the lifting device 32 reduced
0 is advanced and stopped under the lower roll 4. (5) The roll support base 33 is raised by the lift device 32, and when the roll support base 33 contacts the lower roll 4, the operation of the lift device 32 is stopped. (6) The roll clamp 34 provided on the roll support base 33 clamps the body of the lower roll 4, and the shaft end fixing mechanism 35 fixes the end of the lower roll 4 to support the lower roll 4. Fix to the table 33. (7) Loosen the bearing screw of the lower chock (not shown) incorporated in the drive side stand 2d to free the space between the lower chock and the lower roll 4. (8) The roll moving device 30 is retracted as it is, and the lower roll 4 is pulled out from the lower chock (not shown) of the drive side stand 2d. (9) The fixation by the roll clamp 34 and the shaft end fixing mechanism 35 is released, and the lower roll 4 supported by the roll support base 33 is suspended and moved by the crane. (10) The upper roll 3 is moved by the same operation as up to.

Next, a case where a new roll is incorporated using this roll exchanging device will be described. (1) The new upper roll 3 is placed on the roll support base 33 of the roll moving device 30 by a crane, and is fixed to the roll support base 33 by the roll clamp 34 and the shaft end fixing mechanism 35. (2) The roll moving device 30 is replaced with the driving side chock moving device 1
Move to 0 side. As a result, the end portion of the upper roll 3 is fitted into the upper chock of the drive side stand 2d of the roll stand 2 supported by the drive side chock moving device 10. (3) The upper roll 3 is unfixed by the roll clamp 34 and the shaft end fixing mechanism 35, and the roll moving device 30 is retracted. (4) The lower roll 4 is fitted into the lower chock of the drive side stand 2d by the same operations as above. (5) The work side chock moving device 20 supporting the work side stand 2w of the roll stand 2 is moved forward. (6) Move the drive side chock moving device 10 forward. Due to this forward movement, the end portions of the upper and lower rolls 3 and 4 are supported by the work side chock moving device 20 on the work side stand 2w.
It is fitted into the upper and lower chocks (not shown). (7) Tighten the bearing screw of each chock to fix each chock and each roll, and fix one end side of the inter-chock stay 5.

In the roll exchanging work, the drive side stand 2d supported by the drive side chock moving device 10 is adjusted in size between the upper and lower chocks by driving the reduction motor 14, while the roll moving device 30 is moved up and down. It has a free roll supporting base 33, and has a tilting mechanism 36 for tilting the roll supporting base 33, and an aligning mechanism 37 for moving the supporting roll in a direction orthogonal to the axial direction of the roll. Since the position of the roll can be adjusted freely, the roll can be easily adjusted to the upper and lower chocks of the drive side stand 2d, and the position of the roll and the roll center can be adjusted easily compared to the conventional one. Roll replacement work can be completed in a shorter time than before. Moreover, as described above, the rolls cannot be exchanged by the conventional roll exchanging device unless the inter-chock stays 5 are completely removed. However, in the first embodiment, the rolls can be exchanged only by removing one side from the chocks. You can

Embodiment 2 corresponding to claim 2 of the present invention
A roll exchanging device (not shown) according to the present invention will be described. However,
The difference between the second embodiment and the first embodiment lies in the configuration of the roll moving device. Therefore, only the difference will be described. That is, the roll support base of the roll moving device according to the second embodiment is formed in a two-stage structure including an upper roll support part supporting the upper roll and a lower roll support part supporting the lower roll. Is.

Therefore, the roll moving device in which the heights of the upper and lower roll supporting parts are set by the elevating device so that the upper roll supporting part is located lower than the upper roll and the lower roll supporting part is located lower than the lower roll. Is moved in the direction of the drive-side chock moving device, and the roll moving device is stopped when the upper roll support portion comes under the upper roll and the lower roll support portion comes under the lower roll. Then, when the upper roll support portion comes into contact with the upper roll and the lower roll support portion comes into contact with the lower roll by the operation of the lifting device, the operation of the lifting device is stopped, and the roll clamp and the shaft end fixing mechanism cause the upper and lower rolls to roll. After fixing to the upper roll supporting portion and the lower roll supporting portion, the upper and lower rolls can be simultaneously removed from the drive side stand by retracting the roll moving device.

On the other hand, new upper and lower roll support parts are provided.
When the lower roll is placed and fixed, and the roll moving device is moved in the direction of the driving side chock moving device, the upper and lower rolls are placed on the driving side stand of the roll stand supported by the driving side chock moving device. Rolls can be incorporated. According to the present embodiment, since the upper and lower rolls can be replaced at the same time, the roll replacement work time can be shortened as compared with the above-described embodiments.

Embodiment 3 corresponding to claim 3 of the present invention
The roll exchanging device according to the present invention will be described with reference to FIG. 5 which is a schematic plan view of the roll exchanging device 30. The roll moving device 30 is configured to be able to move to a retreat place, and a new roll is previously placed on the retreat place provided on the opposite side of the retreat place in a direction orthogonal to the roll axial direction of the roll moving device 30. An auxiliary roll moving device 40 which is fixed and has the same structure as the roll moving device 30 is provided. The roll moving device 30 and the auxiliary roll moving device 40 include two pairs of unillustrated rails (one of which is the roll moving device 30) that can match the rail 1a provided on the base 1 that moves them in the axial direction of the roll. , The other supports the auxiliary roll moving device 40.), and a hydraulic cylinder (not shown) (may be an electric cylinder).
It is arranged on a position switching device composed of a horizontal moving carriage that is moved by. The roll supporting bases of the roll moving device 30 and the auxiliary roll moving device 40 may have the one-stage configuration as in the first embodiment or the two-stage configuration as in the second embodiment. May be.

Therefore, when the roll moving device 30 is withdrawn from the drive side stand of the roll stand supported by the drive side choke moving device 10 and the roll moving device 30 is retracted, the roll moving device 30 is operated by the position switching device. While moving to the upper retreat place in the figure, the rails supporting the auxiliary roll moving device 40 in the lower retreat place coincide with the pair of rails 1 a provided on the base 1. Therefore, by connecting the horizontal cylinders and moving the auxiliary roll moving device 40 in the direction of the driving side chock moving device 10, a new roll is obtained.
It is installed in the drive side stand supported by. As described above, according to the present embodiment, when exchanging the rolls, it is not necessary to lower the extracted rolls from the roll moving device and to carry out a crane work of loading a new roll. Therefore, the rolls can be exchanged in a shorter time.

Embodiment 4 corresponding to claim 3 of the present invention
The roll exchanging device according to the present invention will be described with reference to FIG. 6 which is a schematic plan view of the roll exchanging device 30. The roll exchanging device 30 has a position switching device 50 including a turntable at a position farthest from the driving side chock moving device 10. It is arranged. Above this position switching device 50, two pairs of rails 50a, 5
0a is provided and one rail 5 sandwiching the center of rotation is provided.
0a on the other side of the rail 50a
The auxiliary roll moving devices 40 are arranged on the upper side of the rails 1 and the roll moving devices 30 and the auxiliary roll moving devices 40 are alternately arranged every time the roll is rotated by 180 °. It is configured to be able to move to.

Therefore, by rotating the position switching device 50 every 180 °, the roll moving device 30 and the auxiliary roll moving device 40 are alternately moved in the direction of the driving-side chock moving device 10 and the driving-side chock movement. Since it can be moved in a direction away from the device 10, the fourth embodiment
Has the same effect as in the third embodiment.

In the above description, the roll stand in which the left and right chocks are connected by the inter-chock stays has been described as an example, but the technical idea according to the present invention is applied to the roll stand without the inter-chock stays. It is obvious that the present invention can be applied, and the above embodiment is merely a specific example of the present invention, and therefore, design changes and the like can be freely made without departing from the technical idea of the present invention.

[0029]

As described above in detail, according to the roll exchanging device according to the first, second or third aspect of the present invention, the upper side of the drive side stand supported by the drive side chock moving device.
The size between the lower chocks is adjusted by driving the reduction motor, and the position of the roll supported by the roll moving device is quickly raised and lowered by the roll support base that can be raised and lowered.
Since the roll and the chock of the drive side stand can be easily adjusted by freely adjusting the tilting mechanism and the aligning mechanism, compared to the conventional roll changing device in which the position of the roll can be hardly adjusted, The roll stand that has inter-chock stays can be exchanged very quickly, and unlike the conventional roll exchanging device, the support bar does not support the rolls. Since it is possible to shorten the time required for exchanging the rolls, there is a great effect on facilitating the roll exchanging work and reducing the working time.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a roll exchanging device according to a first embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is an enlarged view of a portion B in FIG. 2;

FIG. 4 is a side view of a roll moving device of a roll exchanging device according to the first embodiment of the present invention.
(B) is a C arrow line view of Fig.4 (a).

FIG. 5 is a schematic plan view of a roll exchanging device according to a third embodiment of the present invention.

FIG. 6 is a schematic plan view of a roll exchanging device according to a fourth embodiment of the present invention.

FIG. 7 is a side view of a roll carriage of a roll exchanging device according to a conventional example.

FIG. 8 is a roll cart of a roll exchanging device according to a conventional example (showing a state in which a roll stand is set).
FIG.

FIG. 9 is a front view of a roll exchanging device (showing a state in which left and right chocks are removed from a roll) according to a conventional example.

FIG. 10 is a side view of a roll carriage of a roll exchanging device (showing a state before a new roll is incorporated) according to a conventional example.

FIG. 11 is a front view of a roll exchanging device (showing a state in which exchanging rolls has been completed) according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base, 1a ... Rail, 1b ... Guide, 1c ... Guide 2 ... Roll stand, 2d ... Drive side stand, 2w ... Working side stand, 3 ... Upper roll, 4 ... Lower roll, 5 ...
Stays between chocks 10 ... Drive side chock moving device, 11 ... Stand support member, 12 ... Reduction motor support member, 13 ... Sliding plate, 14 ...
Reduction motor, 15 ... Shift device for reduction motor, 16 ... Horizontal cylinder 20 ... Working side chock moving device, 21 ... Stained supporting member, 22 ... Horizontal supporting member, 23 ... Sliding plate, 24 ... Horizontal cylinder 30 ... Roll moving device , 31 ... Bogie, 32 ... Lifting device,
32a ... Link mechanism, 32b ... Base plate, 32c ... Tilt pin, 33 ... Roll support base, 34 ... Roll clamp, 3
5 ... Shaft end fixing device, 35a ... Bracket, 35b ... Screw, 36 ... Tilting mechanism, 37 ... Aligning mechanism, 38 ... Horizontal cylinder 40 ... Auxiliary roll moving device 50 ... Position switching device, 50a ... Rail

Claims (3)

[Claims] 1. A roll stand having an upper chock and a lower chock on the left and right, and the upper chock and the lower chock supporting end portions of the upper roll and the lower roll are set, and the set rolls are set. A roll-down device provided on the drive-side stand of the stand, and a roll-down motor that is detachably engaged to drive the roll-down device.
A drive-side chock moving device that supports the drive-side stand and is reciprocated in the axial direction of the roll, and a work-side stand that supports the drive-side stand and is reciprocated in a direction orthogonal to the axial direction of the roll. A work-side chock moving device is provided, and a tilting mechanism for tilting the roll supporting base is provided on the opposite side of the driving-side chock moving device, the roll supporting base having a roll fixing device is provided. And an aligning mechanism that moves the supporting roll in a direction orthogonal to the axial direction of the roll, and is provided with a roll moving device that supports the roll and is reciprocally operated in the axial direction of the roll. A roll exchanging device characterized in that 2. A roll supporting base of the roll moving device,
The roll exchanging device according to claim 1, wherein the roll exchanging device has a two-stage structure including an upper roll supporting portion that supports the upper roll and a lower roll supporting portion that supports the lower roll. 3. In addition to the roll moving device, an auxiliary roll moving device that supports a new roll is provided, and a position switching device that freely switches the positions of the roll moving device and the auxiliary roll moving device is provided. Claim 1 characterized by the above.
Alternatively, the roll exchanging device according to item 2.